Editor’s Note: An Allegheny County Health Department spokesman on Wednesday confirmed that the Lawrenceville PM2.5 monitor is back online following repair. We updated the headline of this story at 3:16 p.m. June 3 to reflect this new information.
The Allegheny County Health Department (ACHD) on Monday confirmed that the Lawrenceville monitor site is undergoing maintenance and that spiking AQI values showing on its air quality dashboard are not accurate.
An ACHD spokesman said the department is working to add a note of clarification to the dashboard to make users aware of the issue.
By way of background: The Lawrenceville monitor has been producing erratic data intermittently for some time. As far back as the Christmas 2019 bad air episode, ACHD has taken it offline or deleted blocks of data after initial quality assurance review.
Both PM10 and PM2.5 monitors were entirely offline April 27 – May 11 for repairs.
GASP is following the issue and will let you know when repairs are complete.